Culvert.



'mrssmm. PATENTED MAR. '10; 1,908.

CULVERT.. APPLId'ATm-N FILED JULY-B 1907.

DAVID o. BOYD, or GALION, OHIOQ CULV RT.

T 0 all whom it may concern:

Be it known that'I, DAVID C. BOYD, a citizen of the United States, residingat Galion,

in the county of Crawford and State of Ohio,

have invented certain new and useful Improvements in Culverts, of which the followmg is a specification.

This invention contemplates certain new and useful improvements in culverts, and the invention consists in certain, constructlonsand arrangements of the parts that I shall hereinafter fully describe and claim. 1

For a full understanding of the invention and the merits thereof and also to acquire a knowledge of the details of construction and the means for effecting the result, reference is to behad to the following description and accompanying drawings, in which:

Figure 1 is a side elevation of myinvention; Fig. 2 is a face'view of a section; and, Fig. 3 is atransverse sectional view of the culvert.

Corresponding and like parts are referred to in the following descriptlon and indicated in all the views of the drawings by the same reference characters.

My improved culvert is constructed in sections of any desired length and diameter, said sections, designated 1 and 2, being preferably of semi-cylindrical shape so as to form a completed cylindrical culvert when assembled and each section is rovided at one end with a collar 3 designe to engage the reduced end of the next adjacent section when the culvert sections are assembled. The halves or sections 1 and 2 are provided along their edges and at intervals with outstanding ears 5 designed to register, said ears being apertured for the reception of attaching bolts 5 or the like. Each section is also formed along its side edges with beads 6, the said beads in the completed cylindrical culvert forming longitudinal ribs. as clearly illustrate in the drawings. j

In addition to the longitudinal ribs, the culvert sections are provided with preferably registering transverse ribs 7 of any desired number and at any desired intervals apart. In addition, also, to the transverse ribs, the uppermost section of each culvert is provided with a series of obliquely extending ribs 8 extending in o posite directions and intersecting each 0t er, as shown, so as to form on what may be termed the tread portion of the culvert or the uppermost portion thereof, a longitudinally extending ridged surface 9 Specification of Letters Patent. Application filed July 8, 1907. serial No. 382,758.

Patented March 10, 1908.

to strengthen the culvert materially at the point wherethe most strain occurs,- thereby enabling the culvert to. be formed of comparatively light or thincast metal or other material without detracting from its strength. As illustrated in the drawing, this ridged surface may extend over only a portion of the exterior of the uppermost sections of the culvert, preferably on both sides of-a line ex tending longitudinally of the section at the uppermost point thereof. In the present instance this ribbed or ridged reinforcing surface Q is/made up, by the construction of the various ribs, of a series of triangular and lozenge-shaped figures. By the provision of this ridged surface at this portion of the culvert, the wheels of a wagon or other vehicle when cutting through the ground to the culvert will always be received upon thissurface, the main or body portion of the'cul-vert being thereby pr )tected from injury.

In'the preferred arrangement of the ears 5, such ears are located at equal distances from each other, and the end ears are located distances from the ends of the culvert sections (the collars omitted) equal to one-half of the distance between'the several ears of the section. By this means, the main portion of the culvert constructed in accordance.

with the principles of my invention may be put up with the sections breaking joint as lllustrated in the drawin s, the culvert being started and finished at t e ends by one section of half the size of the standard sections. For instance, if each section is four feet long, five ears to each section, each joint may be started with the section two feet in length, and the section four feet in length and the balance of the culvert being laid with four foot sections, breaking joint until the culvert is finished and finishing at the last with a two foot section. This feature enables me to make what is practically a solid pi e up to any length that may be desired, aving a pipe. These measurements, however, are merely used by way of example, as I wish it understood that my invention is not limited to any particular length of the section, or number of ears, or distances between them.

Having thus described the invention, what is claimed as new is:

1. A culvert section of the-character described, provided with a series of obliquely disposed ribs, the series extending longitudinally on the exterior of the culvert section bolt say every one foot on each side of the and along its uppermost portions and also ridged surface terminating on both sides provided with a series 0' transverse ribs short of theside edges of the section and lying which intersect thc oblique r'bs and extend entirely above the main exterior surface of beyond the same to the side edges of the secthe section. 15

tion. In testimony whereof, I affix my signature scribed arched in cross section and PIOVlClBd, I on its exterior along both sides of a'longitudil DAVID BOYD 2. A culvert section of the character dein presence of two Witnesses.

nal line extending through its uppermost Witnesses? portion with a ridged surface-embodying in- CHARLEs E. Fox,

,ter secting oblique and transverse ribs, said CLARENCE LLMORKEL. 

